#3F4527
Closest named color: Dark Olive (#373E02). oklch(37.6% 0.048 118), rgb(63, 69, 39).
Aa
White text reads best on this color (10.03:1).
About this color
#3F4527 is a dark, muted brown. In OKLCH its lightness is 38%, its chroma 0.048 and its hue 118°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.043 away. White text reads best on it, at 10.03:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Dark Olive (#373E02) |
| Black text | 2.09:1 |
| White text | 10.03:1 |
Values
| HEX | #3F4527 |
| RGB | rgb(63, 69, 39) |
| HSL | hsl(72, 28%, 21%) |
| OKLCH | oklch(37.6% 0.048 118) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #3F4527 | 10.03:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #3F4527 | 2.09:1 | Fails | Lc 10.6 | Not readable |
| #3F4527 text on white | 10.03:1 | AAA | Lc 93.3 | Preferred for body text |
| #3F4527 text on black | 2.09:1 | Fails | Lc -9.2 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#E9EBE3
oklch(93.6% 0.011 118)
-
Step 200
200
#D8DBCD
oklch(88.5% 0.019 116.6)
-
Step 300
300
#BEC4AA
oklch(80.9% 0.036 117.8)
-
Step 400
400
#9DA67D
oklch(70.7% 0.058 118)
-
Step 500
500
#85905C
oklch(63.1% 0.074 118.3)
-
Step 600
600
#6F7A42
oklch(55.7% 0.08 118.2)
-
Step 700
700
#5D6633
oklch(49% 0.074 117.5)
-
Step 800
800
#4C542B
oklch(42.8% 0.062 118.2)
-
Step 900
900 (this color)
#3F4527
oklch(37.6% 0.048 118)
-
Step 950
950
#252917
oklch(27.1% 0.032 118.8)
#3F4527 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #494225 | 0.018 |
| Deuteranopia (no green cones) | #484228 | 0.018 |
| Tritanopia (no blue cones) | #42423E | 0.041 |
| Achromatopsia (no color) | #424242 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4527
#3F4527
oklch(37.6% 0.048 118)
- #443C58
#443C58
oklch(37.6% 0.048 297.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #3F4527, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.049
- Green Brown #544E03 ΔE 0.058
- Evergreen #05472A ΔE 0.058
- Mud Brown #60460F ΔE 0.060
- Dark Slate Gray #2F4F4F ΔE 0.061
- Pine Green #0A481E ΔE 0.061
- Navy Green #35530A ΔE 0.063
Use #3F4527 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.